Fuel cell and supercapacitor hybrid propulsion system for shield electric locomotive

Abstract

The invention discloses a fuel cell and supercapacitor hybrid propulsion system for a shield electric locomotive. The fuel cell and supercapacitor hybrid propulsion system comprises a fuel cell module, a BOOST converter, a supercapacitor module, a bidirectional DC / DC converter, a DC / AC inverter and a PWM drive isolation circuit, a power supply circuit, an electric locomotive operation controller,a signal conditioning circuit, a ring temperature sensor, a GPS module, a three-axis acceleration sensor, a touch display, a clock and reset circuit and a CAN interface, wherein the signal conditioning circuit, the ring temperature sensor, the GPS module, the three-axis acceleration sensor, the touch display, the clock and reset circuit and the CAN interface are connected with the electric locomotive operation controller. The fuel cell and supercapacitor hybrid propulsion system has the beneficial effects that the fuel cell and the supercapacitor hybrid propulsion system can quickly provide high-power currents when the shield electric locomotive starts, accelerates, climbs and encounters large running resistance, and the power performance and economy of the shield electric locomotive are improved; the instantaneous large current generated by a traction motor can be quickly recovered during braking to realize the absorption of regenerative braking energy, and the electric locomotive cancontinue to operate when working media of a fuel cell are sufficient.

Description

technical field [0001] The invention relates to the technical field of hybrid propulsion of a shield electric locomotive, in particular to a fuel cell and supercapacitor hybrid propulsion system of a shield electric locomotive. Background technique [0002] my country has a long history of tunnel engineering construction. With the development of various construction undertakings, a large number of tunnel projects have been built, and construction technology and equipment have also been greatly improved. At present, tunnel boring machines are widely used in tunnel construction in our country, and the shield tunneling method used in underground excavation has a relatively high technical level. The number of railway tunnels owned by my country has exceeded 4000Km, ranking first in the world. With the development of highway construction in our country, especially the rise of high-grade highways in our country, the number and scale of highway tunnels in our country have greatly ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems that the power matching of the shield electric locomotive is not good in complex and changeable driving conditions, and the fuel cell is frequently charged and discharged at the peak instantaneous peak current, which seriously affects its energy efficiency and service life, the invention discloses a fuel for the shield electric locomotive. Battery and supercapacitor hybrid propulsion system

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